package com.heu.reggie.controller;

import com.heu.reggie.common.R;
import lombok.extern.slf4j.Slf4j;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.PostMapping;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;
import org.springframework.web.multipart.MultipartFile;

import javax.servlet.ServletOutputStream;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.io.*;
import java.util.UUID;

/**
 * @author: lidong
 * @description
 * @date: 2022/11/7 15:09
 */
@RestController
@Slf4j
@RequestMapping ("/common")
public class CommonController {
    @Value("${reggie.path}")
    private String basePath;
    @PostMapping("/upload")
    public R<String> upload(MultipartFile file){
        log.info(file.toString());


        String originalFilename = file.getOriginalFilename();
        String suffix = originalFilename.substring(originalFilename.lastIndexOf("."));



        String fileName = UUID.randomUUID().toString()+suffix;

        File dir = new File(basePath);
        if (!dir.exists()){
            dir.mkdirs();
        }


        try {
            file.transferTo(new File(basePath+fileName));
        } catch (IOException e) {
            throw new RuntimeException(e);
        }
        return R.success(fileName);
    }
    @GetMapping("/download")
    public void download(String name , HttpServletResponse response){
        try {
            FileInputStream inputStream = new FileInputStream(basePath+name);
            ServletOutputStream outputStream = response.getOutputStream();
            response.setContentType("image/jpeg");



            int len = 0 ;
            byte[] bytes = new byte[1024];
            while ((len = inputStream.read(bytes))!=-1){
                outputStream.write(bytes,0,len);
                outputStream.flush();
            }
            inputStream.close();
            outputStream.close();
        } catch (Exception e) {
            throw new RuntimeException(e);
        }

    }
}
